A measurement system includes an enclosure having at least one sidewall defining an interior space and at least one opening in the at least one sidewall, and a male insert configured to be coupled to the at least one sidewall of the enclosure. The male insert includes a flange configured to engage an exterior surface of the at least one sidewall around the opening, a stem configured to extend through the opening and into the interior space, and a central opening. The measurement system also includes a female insert configured to be detachably coupled to the male insert inside the interior space, and an opto-electronic sensor configured to be housed inside central opening along the stem of the male insert. The measurement system defines a substantially unobstructed viewport for the opto-electronic sensor.

A device for measuring the temperature of a melt, particularly of a molten metal, includes an optical fiber and a guiding tube having an immersion end and a second end opposite to the immersion end. The optical fiber is partially arranged in the guiding tube. An inner diameter of the guiding tube is larger than an outer diameter of the optical fiber. A first plug is arranged at the immersion end of or within the guiding tube proximate the immersion end of the guiding tube. The optical fiber is fed through the first plug and the first plug reduces a gap between the optical fiber and the guiding tube.

A consumable cored wire for measuring a temperature of a molten steel bath includes an optical fiber and a cover laterally surrounding the optical fiber in a plurality of layers. One layer is a metal pipe, also called metal jacket or metal tube. An intermediate layer, also called filler, is arranged beneath the metal tube. The intermediate layer is a rope.

A sensor device includes a passive infrared sensor, a control circuit, and a lens that directs infrared radiation onto the passive infrared sensor. The lens includes an obstruction that asymmetrically blocks transmission of infrared radiation through the lens. The control circuit is configured to determine the direction of crossing of individuals passing in front of the sensor device based on sensor signals from the passive infrared sensor.

A sensor device includes a passive infrared sensor, a control circuit, and a lens that directs infrared radiation onto the passive infrared sensor. The lens includes an obstruction that asymmetrically blocks transmission of infrared radiation through the lens. The control circuit is configured to determine the direction of crossing of individuals passing in front of the sensor device based on sensor signals from the passive infrared sensor.

A device for detecting at least one thermographic image including a thermal camera sensitive to infrared radiation for acquiring the thermographic image; a protective case, inside which the thermal camera is inserted, having a window through which the thermal camera is able to acquire the thermographic image; a screen, positioned outside the protective case and movable between a first operating position at which it is superposed on the window to protect it from environmental disturbances and a second operating position wherein it is shifted from the window, allowing the thermal camera to acquire the thermographic image; a pneumatic system for supplying air inside the protective case having an inlet outside the protective case; a computerized command and control unit; the pneumatic system includes means for adjusting and distributing the air operating inside the protective case and in communication with the external inlet controlled by the computerized command and control unit.

A thermal imaging apparatus comprising: a housing with a front wall having a first aperture extending therethrough, a rear wall spaced from the front wall, side walls connecting the front and rear walls; a thermal imaging camera mounted within the internal chamber of the housing, a camera lens aligned with the first aperture; and a fluid injection portion connected to the internal chamber that directs fluid towards the lens to clean the lens. Alternatively the housing defines first and second internal chambers spaced along a longitudinal axis of the apparatus separated by an internal wall comprising a second aperture extending therethrough; where the thermal imaging camera is mounted within the second internal chamber, with the camera lens aligned with the two apertures. Gas and fluid injection portions are connected to the first internal chamber to direct gas into the first chamber; and fluid towards the lens to clean the lens.

A thermal imaging apparatus comprising: a housing with a front wall having a first aperture extending therethrough, a rear wall spaced from the front wall, side walls connecting the front and rear walls; a thermal imaging camera mounted within the internal chamber of the housing, a camera lens aligned with the first aperture; and a fluid injection portion connected to the internal chamber that directs fluid towards the lens to clean the lens. Alternatively the housing defines first and second internal chambers spaced along a longitudinal axis of the apparatus separated by an internal wall comprising a second aperture extending therethrough; where the thermal imaging camera is mounted within the second internal chamber, with the camera lens aligned with the two apertures. Gas and fluid injection portions are connected to the first internal chamber to direct gas into the first chamber; and fluid towards the lens to clean the lens.

A consumable cored wire for measuring a temperature of a molten steel bath includes an optical fiber and a cover laterally surrounding the optical fiber in a plurality of layers. One layer is a metal pipe, also called metal jacket or metal tube. An intermediate layer, also called filler, is arranged beneath the metal tube. The intermediate layer is a rope.

An electronic device includes an outer case, a circuit substrate, a thermopile sensor chip, a filter structure, and a waterproof structure. The outer case has an opening. The circuit substrate is disposed inside the outer case. The thermopile sensor chip is disposed on the circuit substrate. The filter structure is disposed above the thermopile sensor chip. The waterproof structure is surroundingly connected between the filter structure and the outer case for sealing up the opening of the outer case, wherein the waterproof structure has a through hole for exposing the filter structure and communicated with the opening of the outer case.